Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1350de160a311f0…

MALICIOUS

PDF

75.1 KB Created: 2021-05-12 09:53:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: c0e810db4e2a2e1eab25f0e790514fe6 SHA-1: 73b2425f9b556b770a41dbfe44945a7198cfcff6 SHA-256: b1350de160a311f061575f4826b0a0d869e28bdd8c48e0d96479c80da3ba312a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though heavily obfuscated, contains text related to 'dish network newsmax tv', suggesting a phishing or scam lure. The presence of numerous external URIs, many hosted on disposable domains, further supports the classification as a malicious link farm designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://vilenefex.ru/wb?keyword=does%20dish%20network%20have%20newsmax%20tv PDF link annotation
    • http://dresdenpharma.ru/14284920034a6ss2.pdfIn PDF document text
    • http://ruxuzosok.mywebcommunity.org/59035515423.pdfIn PDF document text
    • http://kfcrabota.ru/16702017101ggg8y.pdfIn PDF document text
    • http://mufinofol.scienceontheweb.net/fovenoxasikomilupeke.pdfIn PDF document text
    • http://pukebebizadolu.mypressonline.com/how_to_drain_lochinvar_water_heater.pdfIn PDF document text
    • http://xeberul.mywebcommunity.org/90487359605.pdfIn PDF document text
    • http://inertbhjbj.ru/mifosunobivig6edpw.pdfIn PDF document text
    • http://shop-you.xyz/breviary_prayer_book69qqk.pdfIn PDF document text
    • http://rijesejivo.22web.org/generos_musicales_latinoamericanos.pdfIn PDF document text
    • http://timecodes.net/panore4a1yn.pdfIn PDF document text
    • http://matizaw.mywebcommunity.org/73466632684.pdfIn PDF document text
    • http://jotafitosixa.getenjoyment.net/banderas_y_capitales_del_mundo.pdfIn PDF document text
    • http://wozovumorawoka.sportsontheweb.net/pdf_bestand_kleiner_maken_zonder_kwaliteitsverlies.pdfIn PDF document text
    • http://fedezin.scienceontheweb.net/pifabekavopunonivafo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dibiremiva.rf.gd/85482370974.pdfIn PDF document text
    • http://regadozemi.epizy.com/bumowizabutogixapupejixag.pdfIn PDF document text
    • http://bolilolu.epizy.com/university_of_pennsylvania_logo_face_masks.pdfIn PDF document text
    • http://sovupafol.epizy.com/11649076178.pdfIn PDF document text
    • http://dizakopalelur.epizy.com/85070755037.pdfIn PDF document text
    • http://takugiwem.rf.gd/biperi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e87e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87E 5316 bytes
SHA-256: 98be9c5d07087ff34f6b390151f2b720f7a315714bb3c6b569f8cec9a72096d4
font_01_sfnt_off0000fa82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA82 10684 bytes
SHA-256: 10310a58ad88b1b480b983e9f2bb9dda734bb438aae0f241b6090f17e9bc28a1

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